Molder&#39;s flask



Patented June 14, 1949 OFFICE MOLDERS FLASK Walter J. Jones, Lomita, Calif., assignor to Columbia Steel Company, a corporation of Delaware Application November 13, 1945, Serial No. 628,072

2 Claims. 1

This invention relates to improvements in molders flasks.

Heretofore, flask bars have generally been held in position by a c clamp placed over a flange of the flask and the end of the bar with a wedge driven between the clamp and the flask bar. Since such clamps extend outside of the flask, they are frequently loosened during handling. In addition, it is difficult to position properly the flask bars since they tend to move when the Wedge is driven into position.

It is accordingly an object of the present invention to overcome the foregoing difficulties and provide an improved manner of positioning flask bars.

It is a further object to provide a flask and bar that are simple in design and easy to use.

The foregoing and further objects will become apparent from the following specification taken in conjunction with the appended drawing, wherein:

Figure 1 is an isometric view of a molders flask and flask bar embodying the improvements of my invention;

Figure 2 is a plan view thereof;

Figure 3 is a sectional elevation taken on line IIIIII of Figure 2; and

Figure 4 is a cross section taken on line IVIV of Figure 3.

Referring more particularly to the drawing, the numerals 2 and 3 designate the cope and nowel respectively of a foundry flask and the numeral 4 a flange having a flat upper surface on the upper end of the cope 2. In accordance with the teachings of my invention, oppositely disposed inwardly extending flanges 6 are provided on the flask bar end of the flask. The flanges 6 have notches or slots 8 cut out at each end thereof. Disposed on the upper end of flask 2 on flanges 4 and 6 is a flask bar l having a downwardly depending portion l2, which is of slightly less length than the internal width of the flask. The depending portion is provided with notches or slots M which closely engage the flanges 6 so asfto hold the flask bar in the correct position. The bars are inserted or removed from the flask through the slots 8 in the flanges 6.

After the bars have been placed in position, sand is rammed around the pattern and flask bar, thus holding the sand rigidly in position. Since there are no protruding surfaces or parts holding the bar in position, the flask can be readily handled without knockin the flask bar loose.

While I have shown and described one specific embodiment of my invention, it will be understood that this embodiment is merely for the purpose of illustration and description and that various other forms may be devised within the scope of my invention, as defined in the appended claims.

I claim:

1. In a molders flask having a cope with upright side walls defining an opening and having flanges with flat upper surfaces on the upper end of at least two of the oppositely disposed side walls, said flanges extending inwardly of said walls on two oppositely disposed sides of said opening, the combination therewith of a flask bar having flattened ends the undersides of which are adapted to be disposed on the flat upper surfaces of said flanges, said bar having a depending portion adapted to substantially extend across the opening between the oppositely disposed walls of said cope having the inwardly extending flange thereon whereby said depending portion is adapted to extend under said inwardly extending flanges, notched out portions in the upper end portions of said depending portion directly beneath said flattened ends, said notched out portions closely engaging the inwardly extending flanges to hold said flask bar at any desired position in said cope,

said flanges having means for entering the depending portion of the flask into said cope.

2. In a molders flask including a cope having upright side walls defining an opening and having flanges with flat upper surfaces on the upper end of at least two of the oppositely disposed side walls, said flanges extendin inwardly of said walls on two oppositely disposed sides of said cope and having oppositely disposed notches therein, the combination therewith of a flask bar having flattened ends, the undersides of which are adapted to be disposed on the flat upper surfaces of said flanges, said bar having a depending portion adapted to substantially extend across the opening between the oppositely disposed walls of said cope having the inwardly extending flanges thereon whereby said depending portion extends under said inwardly extending flanges, notched out portions in the upper end portions of said depending portion directly beneath. said flattened WAL'IER J. JONES.

REFERENCES CITED The fqllowing tefe en ees are pf .regoi din the file of thispatent:

Number UNITED STATES PATENTS Name Date Riley June 26, 1888 Cornell Dec. 31, 1889 Taylor July 14, 1891 Baugh Oct. 4, 1892 Barnett Apr. 6, 189'? Mills Sept. 30, 1902 Downie Apr. 7, 1914 Fahnestock May 4, 1915 Kruegar Sept. 28, 1915 Kenyon Apr. 29, 1919 Mayworm Jan. 29, 1924 -Moore et a1 Mar. 10, 1931 

